Research and Publications: Recent submissions
Now showing items 381-400 of 1146
-
The effect of academic advising on academic performance of university students in Kenyan universities
(International Association of African Researchers, 2011)Although academic advising in Kenyan universities exists, no research has been done to find out how it impacts on students’ educational and career goals. This research aimed at establishing the effect of academic advising ... -
Perceptions of academic staff on research and publishing in Kenyan universities
(International Journal of Education Administration and Policy Studies, 2012-03)Academic research represents the backbone of human activity in improving the quality of life through expanding frontiers of academic knowledge, and making further research possible throughout the world. Academic research ... -
A study of the relationship between academic achievement motivation and home environment among standard eight pupils
(Academic Journals, 2010)The objective of this study was to investigate the relationship between academic achievement motivation and home environment among standard eight pupils. The study was carried out on 235 standard eight Kenyan pupils from ... -
An alternative clean-up column for the determination of polychlorinated biphenyls in solid matrices
(Royal Society of Chemistry, 2016)The need for continuous monitoring of polychlorinated biphenyls (PCBs) has necessitated the development of analytical techniques that are sensitive and selective with minimal reagent requirement.In light of this,we developed ... -
Investigation of teaching the integrated topics on drug abuse in secondary school curriculum
(2011)The problem of this study was to investigate the teaching of the integrated topics on drug abuse in the secondary school curriculum as a strategy to wipe out the problem of drug abuse among students in Machakos District, ... -
Interaction between the Linear and Nonlinear Polarization in Optical Fibre
(2014)Interaction between polarization mode dispersion (PMD) and nonlinear induced birefringence in a fibre with consideration of mode coupling has been investigated theoretically using Matlab and Optism. The investigations show ... -
Performance Comparison between the Traditional Intensity Modulation Direct Detection and Coherent Detection in a High Speed Optical Fibre Communication System
(2015)Passive optical networks (PONs) have become a dominant approach for the fibreto–the-home (FTTH) network deployments. Reliable and spectral efficient technologies are a necessity for extending the unamplified transmission ... -
All-Optical VCSEL-to-VCSEL Injection Based on Cross Gain Modulation for Routing in Multinode Flexible Spectrum Optimization in Optical Fibre Transmission Links
(Hindawi, 2019)In this paper, we experimentally present a novel, all-optical spectral efficient vertical-cavity surface-emitting laser- (VCSEL-) based technique for routing and spectrum assignment in optical networks. Exploiting all ... -
Modelling of an Optical Fibre Raman Amplifier
(2012)The transmission of signals in long-haul optical fibre systems requires signal amplification. Raman amplification is based on SRS and it requires a frequency shift of 13.2 THz provided by signal and pump wavelengths of ... -
Comparison of PMF and LEAF as Optical Fibre Stress and Temperature Sensing Elements
(2013)We experimentally investigate the sensitivity of PMF and LEAF fibre. The design of a stress sensor gave the best sensitivity of 0.051 kg -1 while that of a temperature sensor, gave the best sensitivity of 0.181 0C1 -
Forward Raman Amplification Characterization in Optical Networks
(2014)Optical networks that apply the technology of dense wavelength-division multiplexing (DWDM) have recently resulted in a considerable increase in existing telecommunications infrastructures. They are expected to play a ... -
An all Optical VCSEL Wavelength Conversion for Optical Fibre Access Networks
(Research Gate, 2016)A cheap, scalable and efficient optical wavelength conversion and optical path switching technique for access networks is experimentally demonstrated. Wavelength conversion is used in wavelength division multiplexed (WDM) ... -
Modeling of ring resonators as optical Filters using MEEP
(2016)Ring Resonators are key component in modern optical networks. Their size allows high density integration in optical photonic circuits due to the use of high index contrast. Ring Resonators based filters in wavelength ... -
Impact of Transformational Leadership Style On Secondary School Students’ Academic Achievement in Mbeere South Sub-County, Embu County, Kenya
(2016)Globally, education is considered as the key drive of any country’s development. This explains the reason why academic achievement is given a lot of importance in the schooling process. In this respect and specifically ... -
Teaching of the integrated topics on drug abuse as a strategy to eradicate drug abuse among secondary school students in Machakos District, Kenya
(2012)The problem of drug abuse has been an area of concern in Kenya for the last two decades. The previous studies carried out in this area revealed that drug abuse has been on the increase at the secondary school level in ... -
The benefits of mainstreaming environmental education in the school curriculum
(Emerging Academy Resources, 2013)The mismanagement and even over- exploitation of environment has been an area of concern globally in the last three decades. This is closely related to human activities such as mining, human settlement and agriculture. ... -
The Need to Integrate Themes of Environmental Education in the School Curriculum in Kenya
(HRmars, 2013)Globally, the environment is under pressure from climatic variability and anthropogenic activities including deforestation, wetland and water catchment destruction, agro-chemicals use and urbanization among others. The ... -
The dilemma of career choice: a case study of Kenyan secondary school students
(Scholarly Research Journal for Interdisciplinary Studies, 2012)The purpose of this study was to investigate the variables that influence career choice among secondary school students in Kenya. The study was guided by two objectives: to determine the influence of peer groups on ... -
Effects of Polarization Mode Dispersion (PMD) on Raman Gain and PMD Measurement using an Optical Fibre Raman Amplifier
(IEEE, 2013-09-09)We experimentally investigate the effects of increase of the differential group delay (DGD) on Raman gain and gain value. It was found that the increase of DGD values lead to the formation and the increase in the number ... -
A 1550 nm All-Optical VCSEL-to-VCSEL Wavelength Conversion of a 8.5 Gb/s Data Signal and Transmission over a 24.7 km Fibre
(International Society for Optics and Photonics, 2017)For the first time, we demonstrate, VCSEL-to-VCSEL wavelength conversion within the low attenuation 1550 nm transmission window, including transmission over fibre and bit error rate (BER) performance characterization. ...
